[asterisk-ss7] Libss7 development

[Rony Ron]

Hi all,
i am trying to develop sccp  for libss7,
i have began be trying to understand deeply the current code
of  isup; i have some misunderstandings regarding this struct :

Why isup_*CALL* ? who can comment, please, this struct for me?
struct isup_call {
	char called_party_num[ISUP_MAX_NUM];
	unsigned char called_nai;
	char calling_party_num[ISUP_MAX_NUM];
	unsigned char calling_nai;
	unsigned char presentation_ind;
	unsigned char screening_ind;
	char charge_number[ISUP_MAX_NUM];
	unsigned char charge_nai;
	unsigned char charge_num_plan;
	unsigned char gen_add_num_plan;
	unsigned char gen_add_nai;
	char gen_add_number[ISUP_MAX_NUM];
	unsigned char gen_add_pres_ind;
	unsigned char gen_add_type;
	char gen_dig_number[ISUP_MAX_NUM];
	unsigned char gen_dig_type;
	unsigned char gen_dig_scheme;
	char jip_number[ISUP_MAX_NUM];
	unsigned char lspi_type;
	unsigned char lspi_scheme;
	unsigned char lspi_context;
	unsigned char lspi_spare;
	char lspi_ident[ISUP_MAX_NUM];
	int oli_ani2;
	unsigned int call_ref_ident;
	unsigned int call_ref_pc;
	
	int range;
	unsigned char status[255];
	int transcap;
	int l1prot;
	int cause;
	int causecode;
	int causeloc;
	int cot_check_passed;
	int cot_check_required;
	int cicgroupsupervisiontype;
	unsigned char event_info;
	unsigned short cic;
	unsigned short slc;
	struct isup_call *next;
	/* set DPC according to CIC's DPC, not linkset */
	unsigned int dpc;
};

regards,

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